1 /*
2 * Copyright 2017 Valve Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Andres Rodriguez <andresx7@gmail.com>
23 */
24
25 #include <linux/fdtable.h>
26 #include <linux/file.h>
27 #include <linux/pid.h>
28
29 #include <drm/amdgpu_drm.h>
30
31 #include "amdgpu.h"
32 #include "amdgpu_sched.h"
33 #include "amdgpu_vm.h"
34
amdgpu_to_sched_priority(int amdgpu_priority,enum drm_sched_priority * prio)35 int amdgpu_to_sched_priority(int amdgpu_priority,
36 enum drm_sched_priority *prio)
37 {
38 switch (amdgpu_priority) {
39 case AMDGPU_CTX_PRIORITY_VERY_HIGH:
40 *prio = DRM_SCHED_PRIORITY_HIGH;
41 break;
42 case AMDGPU_CTX_PRIORITY_HIGH:
43 *prio = DRM_SCHED_PRIORITY_HIGH;
44 break;
45 case AMDGPU_CTX_PRIORITY_NORMAL:
46 *prio = DRM_SCHED_PRIORITY_NORMAL;
47 break;
48 case AMDGPU_CTX_PRIORITY_LOW:
49 case AMDGPU_CTX_PRIORITY_VERY_LOW:
50 *prio = DRM_SCHED_PRIORITY_MIN;
51 break;
52 case AMDGPU_CTX_PRIORITY_UNSET:
53 *prio = DRM_SCHED_PRIORITY_UNSET;
54 break;
55 default:
56 WARN(1, "Invalid context priority %d\n", amdgpu_priority);
57 return -EINVAL;
58 }
59
60 return 0;
61 }
62
amdgpu_sched_process_priority_override(struct amdgpu_device * adev,int fd,enum drm_sched_priority priority)63 static int amdgpu_sched_process_priority_override(struct amdgpu_device *adev,
64 int fd,
65 enum drm_sched_priority priority)
66 {
67 struct fd f = fdget(fd);
68 struct amdgpu_fpriv *fpriv;
69 struct amdgpu_ctx *ctx;
70 uint32_t id;
71 int r;
72
73 if (!f.file)
74 return -EINVAL;
75
76 r = amdgpu_file_to_fpriv(f.file, &fpriv);
77 if (r) {
78 fdput(f);
79 return r;
80 }
81
82 idr_for_each_entry(&fpriv->ctx_mgr.ctx_handles, ctx, id)
83 amdgpu_ctx_priority_override(ctx, priority);
84
85 fdput(f);
86 return 0;
87 }
88
amdgpu_sched_context_priority_override(struct amdgpu_device * adev,int fd,unsigned ctx_id,enum drm_sched_priority priority)89 static int amdgpu_sched_context_priority_override(struct amdgpu_device *adev,
90 int fd,
91 unsigned ctx_id,
92 enum drm_sched_priority priority)
93 {
94 struct fd f = fdget(fd);
95 struct amdgpu_fpriv *fpriv;
96 struct amdgpu_ctx *ctx;
97 int r;
98
99 if (!f.file)
100 return -EINVAL;
101
102 r = amdgpu_file_to_fpriv(f.file, &fpriv);
103 if (r) {
104 fdput(f);
105 return r;
106 }
107
108 ctx = amdgpu_ctx_get(fpriv, ctx_id);
109
110 if (!ctx) {
111 fdput(f);
112 return -EINVAL;
113 }
114
115 amdgpu_ctx_priority_override(ctx, priority);
116 amdgpu_ctx_put(ctx);
117 fdput(f);
118
119 return 0;
120 }
121
amdgpu_sched_ioctl(struct drm_device * dev,void * data,struct drm_file * filp)122 int amdgpu_sched_ioctl(struct drm_device *dev, void *data,
123 struct drm_file *filp)
124 {
125 union drm_amdgpu_sched *args = data;
126 struct amdgpu_device *adev = drm_to_adev(dev);
127 enum drm_sched_priority priority;
128 int r;
129
130 /* First check the op, then the op's argument.
131 */
132 switch (args->in.op) {
133 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE:
134 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE:
135 break;
136 default:
137 DRM_ERROR("Invalid sched op specified: %d\n", args->in.op);
138 return -EINVAL;
139 }
140
141 r = amdgpu_to_sched_priority(args->in.priority, &priority);
142 if (r)
143 return r;
144
145 switch (args->in.op) {
146 case AMDGPU_SCHED_OP_PROCESS_PRIORITY_OVERRIDE:
147 r = amdgpu_sched_process_priority_override(adev,
148 args->in.fd,
149 priority);
150 break;
151 case AMDGPU_SCHED_OP_CONTEXT_PRIORITY_OVERRIDE:
152 r = amdgpu_sched_context_priority_override(adev,
153 args->in.fd,
154 args->in.ctx_id,
155 priority);
156 break;
157 default:
158 /* Impossible.
159 */
160 r = -EINVAL;
161 break;
162 }
163
164 return r;
165 }
166